closed contract. Whose terms constitute the entire agreement between the contracting parties and no clause or provision can be changed or modified without mutual consent. An insurance contract, for example, is a closed contract whereas a construction contract may not be one. See also open contract.
The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force. The volt is named in honour of the Italian physicist Alessandro Volta (1745â1827), who invented the voltaic pile, possibly the first chemical battery.
1. Voltage Measurement Overview. Voltage is the difference of electrical potential between two points of an electrical or electronic circuit, expressed in volts.It measures the potential energy of an electric field to cause an electric current in an electrical conductor.